Is there anyone else experiencing vibration in the interior at low RPMs?

Try adding full synthetic oil. It vibrates during cold starts, but I'm not sure about anything else. Anyway, after I added the oil, it got better.

The engine is running at low RPM. The car has traveled 6,000 kilometers.

This doesn't happen when turning. You might want to check the strut bearings or the suspension system to see if there's any issue.